Incorrect Calculation Affecting kernel-debug-core package, versions <0:4.18.0-193.120.1.el8_2
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Test your applications- Snyk ID SNYK-RHEL8-KERNELDEBUGCORE-6197437
- published 26 Jan 2024
- disclosed 19 Apr 2023
Introduced: 19 Apr 2023
CVE-2023-2163 Open this link in a new tabHow to fix?
Upgrade RHEL:8 kernel-debug-core to version 0:4.18.0-193.120.1.el8_2 or higher.
This issue was patched in RHSA-2024:0403.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-debug-core package and not the kernel-debug-core package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
Incorrect verifier pruning in BPF in Linux Kernel >=5.4 leads to unsafe code paths being incorrectly marked as safe, resulting in arbitrary read/write in kernel memory, lateral privilege escalation, and container escape.
References
- https://access.redhat.com/security/cve/CVE-2023-2163
- https://bughunters.google.com/blog/6303226026131456/a-deep-dive-into-cve-2023-2163-how-we-found-and-fixed-an-ebpf-linux-kernel-vulnerability
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=71b547f561247897a0a14f3082730156c0533fed